Système

> Yannjacquelet
> Informatique

Operating Systems Development Series. Operating Systems Development - Kernel: Basic Concepts Part 1 by Mike, 2009 This series is intended to demonstrate and teach operating system development from the ground up.

Welcome! :) Well...We have finally made it to the most important part of any operating system: The Kernel. We have heard this term alot so far throughout the series, already. The Kernel is the Core of all operating systems. In this tutorial, We will look at what goes behind Kernels, what they are, and what they are responsible for. Ready?
RDTSC hooking sous Linux : théorie et pratique.

Expanded Main Page. Tiny Core Linux, Micro Core Linux, 12MB Linux GUI Desktop, Live, Frugal, Extendable. Welcome to Linux From Scratch!
Linux From Scratch - traduction francophone. LINUX KERNEL INTERNALS: Kernel Space and User Space. Understanding of Kernel space and User space in detail is very important if you wish to have a strong base of Linux Kernel.Here Kernel Space and User Space corresponds to their Virtual address space.Every process in linux utilizes its own separate virtual space.In a linux system based on 32 bit Architecture, user space address space corresponds to lower 3GB of virtual space and kernel space the upper 1GB.

(general way)The kernel space virtual address space is shared between all the processes.When a process is active, it can either be running in "user mode" or "kernel mode".In a process is running in User mode it means that the CPU is running the user space side of code.A process running in the user mode has limited capability and is controlled by a flag in the CPU.Even though the kernel memory is present in the process's memory map the user space code is not allowed to access the kernel space code. 2.

The concept is to have DKMS modules automatically rebuilt when a new kernel is installed.[2] An essential feature of DKMS is that it automatically recompiles all DKMS modules if a new kernel version is installed. This allows drivers and devices outside of the mainline kernel to continue working after a Linux kernel upgrade. Another benefit of DKMS is that it allows the installation of a new driver on an existing system, running an arbitrary kernel version, without any need for manual compilation or precompiled packages provided by the vendor. References[edit] External links[edit]
Assembly x86 Emulator.